Q: What are the prime factors of the number 42,136,064?

 A: 2, 17, 47, 103

Why are those the prime factors of the number 42,136,064?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 42,136,064

42,136,064
Factor Arrows
221,068,032
Factor Arrows
210,534,016
Factor Arrows
25,267,008
Factor Arrows
22,633,504
Factor Arrows
21,316,752
Factor Arrows
2658,376
Factor Arrows
2329,188
Factor Arrows
2164,594
Factor Arrows
282,297
Factor Arrows
174,841
Factor Arrows
47103

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 17, 47, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 17 x 47 x 103 = 42,136,064

This can also be written as 29 x 171 x 471 x 1031 = 42,136,064

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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